Battery charger



FIG. 1 is a front view of a battery charger showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right front corner view thereof;

FIG. 8 is a left front corner view thereof;

FIG. 9 is a right rear corner view thereof;

FIG. 10 is a left rear corner view thereof;

FIG. 11 is a top front left perspective view thereof, shown in an open state; and,

FIG. 12 is a left front corner view thereof, shown in an environment of use.

The broken lines shown in the drawings illustrate portions of the battery charger that form no part of claimed design. 

CLAIM The ornamental design for a battery charger, as shown and described. 